National Medical Journal of China, Volume 92, Issue 46,2012, Pages 3265-3268, doi:10.3760/cma.j.issn.0376-2491.2012.46.008
National Medical Journal of China, Volume 92, Issue 46,2012, Pages 3300-3304, doi:10.3760/cma.j.issn.0376-2491.2012.46.016
National Medical Journal of China, Volume 92, Issue 46,2012, Pages 3296-3299, doi:10.3760/cma.j.issn.0376-2491.2012.46.015
National Medical Journal of China, Volume 92, Issue 46,2012, Pages 3246-3249, doi:10.3760/cma.j.issn.0376-2491.2012.46.003
National Medical Journal of China, Volume 92, Issue 46,2012, Pages 3274-3278, doi:10.3760/cma.j.issn.0376-2491.2012.46.010